Chaeles e



(No Model.)

C. E. BROWN.

PRESSURE REGULATOR..

v(No. 389,791.

Attorney/J UNITED STATES PATENT Fries.

CHARLES E. BROWN, OF ROME, NEW YORK.

PRESSURE-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 389.791, datedSeptember 18, 1888.

Application filed February 9, 188B. Serin-l No. 263;517. (No model.)

To all whom it may concern,.-

Be it known that I, CHARLES E. BROWN, a citizen of the United States,and a resident of Rorne,in the county of Oneida and State ofNewYork,have invented'eertain new and useful Improvements inPressure-Regulators for Steam- Pumps; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,whichwill enable others skilled in the art to which it appertains to makea'nd use the same, reference being had to the accompanying drawings,which form a part of this specification, and in which-,-

Figure l is a plan view orn my improved pressure regulator as applied.Fig. 2 is a vertical sectional View taken on the line a: w of Fig. 1,and Fig. 3 is a horizontal sectional view through the valve mechanism. l

Myinvention has relation to automatic pressure-regulatorsforsteam-pumps, and has forits object to prevent the bursting of thepipes -when the outlet-pipe has been closed,or when the pressure withinthem exceeds a cert-ain point; auditconsistsin the followingimprovedconstruction and combinations of parts.

Referring to the accompanying drawings, in which the same letters ofreference indicate corresponding parts in all of the figures, Aindieatesthe pump,(shown only in dotted lines,) and B the pipes to which theregulator is applied. The pipe O,- which supplies the pump with steam,is provided with an ordinary plugvalve, D; or, if preferred, any otherconstruction may be used. The pipe through which the water is forcedbythe pump is provided with an upright pipe, E, within the upper end ofwhich is located the lower end of a piston, F, the top of the pipe beingprovided with an ordinary stuffing box to prevent leakage around thepiston. The upper end y of this piston slides through an aperturedplate, G, which is supported at the required distance above the top ofthe pipe by means of the two uprights H H, which are secured attheirlower ends to the top of the stufiing-box. Ifdesired, the upperportion of the piston can be enlarged, as shown, and a cross-head, I, issecured to the piston, near its lower end, having suitable aperturesthrough which pass the guides or uprights H H. Upon the outer ends ofthis cross-head are pins orbeariugs J J, upon which are pivoted theupper ends oi" the two pitnlen or links K K.

A bar or connecting-rod, L, may be secured at its ends to thesupply-pipe C, and to the e upper end ofthe upright pipe E, (or anyother support may be provided,) upon which is pivolally secured theright-angled or L-shaped lever M, the short arm of which engages withthe outer end of the plug-valve, and thelonger arm, which is preferablybifurcated and bent outwardly at its ends, is secured to the lower endsof the pitmen KK. The short end of the lever may be secured to the endof the plugvalve in any suitable manner which will permit of its freeaction; but I have shown it passed through a slot in the end of thevalve, the slot being of sufficient size to permit of its free movementwithout the danger of its binding or sticking.

My regulator can be used to advantage upon the ordinary steam-pumps forsupplying water to boilers, or it may be made of such size as to be usedupon the water-mains of cities, Ste.

vOn boilers the outlet-pipe may be provided with an ordinary cock, whichis opened when the boiler is being supplied with water, and which isclosed when theboiler is as full as desired. In this case as soon as thecock is closed the pump will instantly increase the pressure in thepipes to such a degreeihat if there were no means ofreliefit would burstthe pipes; but as soon as the pressure increases to a certain point thewater in the pipe Eacts upon thelower end of the piston F and forces itupward, which in turn carries with it the cross-head I. The cross-head,through the links or pitmen K K, liftsjup the longer arm of the lever Mand causes the shorter arm to push in the plug-valve D, and thus shutoff the supply of steam and stop the pump. As soon as the cock is openedto supply the boiler with water the pressure on the pipes is removed andthe piston and the cross-head are allowed to fall, and thus, through thelinks and lever, open the valve and admit steam and start the pump.

If it is desired, the cock may be dispensed with and the device made towork at different points or degrees of pressure, as may be desired, byproviding the pistonv with weights N,

ICO

which may be plaeed upon an extension ofthe piston, as shown at O, sothat by placing enough weights upon the piston it can be so regulatedthat when the pressure upon the pipes exeeedsacertain point thepistonwill be raised and the pump stopped. As soon as the pressure upon theinterior of the boiler and upon the pipes decreases to a Certain pointthe piston will fall and open the valve and again start the pump.

There the device is to be used for pumping water for railway-stations,it is preferable to place the pipe B upon the support P and provide thepipe with a waycock, to one of which the pipe E is attached; but whenused upon the water-mains of a city no support is needed, as the pipeitself is buried in the ground.

Thedevieeiscxtrelnelysimpleandis capable of being attached and used uponany form of pipe and pump, and when properly arranged and adjusted itwill prevent all damages to either the pipe or the pump.

Having thus described my invention, I claiml. In a pressure-regulatorforsteam-punips, the combination, with the Steanisupply pipe, oi' avalve therein, au upright pipe secured at its lower end to theoutletpipe, a bar seeured at its ends to the steam-pipe and to theupright pipe, a piston in the upper end of the upright pipe, a crosshead upon the upper portion of said piston, a bifurcated lever pivotallysecured upon said bar, one end of which operates the valve, and twolinks secured at one end to the eross-head upon the piston and at theother to the ends of the bifureated lever, substantially as described.

2. In a pressure-regulator1hr steam-pumps, the combination, with thesteam-supply pipe, of a valve therein, an upright pipe secured at itslower end tothe outletpipe, apiston within the upper end of said uprightpipe, the upper end of the piston being provided with a stein adapted toreceive weights, two uprights at the side of the piston, a perforatedplate secured to the tops of said uprights, a cross-head upon the pistonhaving holes whieh slide upon the uprights and having pins upon theirouter ends, a bifnreated lever pivotally secured between the piston andthe Valve in the steam- 5,

pipe,one end of which operates the valve, and two links pivotallysecured upon the pins upon the cross-head at one end and to the ends ofthe lever at the other end, substantially as described.

In testimony that I ela m the foregoing as my own I have hereuntoaffixed my signature in presence ol two witnesses.

CHARLES E. BROWN.

Vi l n esses:

JennT S. Banen, CLARK. W. DnA'rnn.

